Nut-lock.



R c. SHO WALTER.

NUT LOCK.

APPLICATION FILED DEC. 2,1911.

Patented June 15, 1915.

' L43A50n shank 2..

BOY C. SHOWALTER, OF ALTOONA, PENNSYLVANIA.

' NUT-LOCK.

Specification of Letters Patent.

Patented June 15, 1935.

Application filed December 2, 1911. Serial No. 663,517.

To all whom it may concern Be it known that I, ROY G. SHOWALTER, a

readily removed from the nut when it is.

desired to remove the latter from the bolt.

A still further object'of the invention is to provide means on the nut to receive or engage a portion-of the nut locking means so as to hold the same against casual displacement when in use.

In the drawing, forming a portion of this specification 'iihd in which like numerals of -reference indicate similar parts in the several v1ews:F1gure 1 1s a side view showing.

the application of the nut lock to a nut. Fig. 2 is a section On line 22 of Fig. 1. Referring to the drawing the bolt 1 is of usual construction, being provided with theh well known form of threaded shank 2. The nut ,3 is also substantially of well known configuration and, construction, being providedwith a central bore 4 to receive the V A substantially conical passage I 5 is formed in the nut 3,-and as shown, this passage opens intermediate of its .ends into the bore 4 of the nut for a purpose to be hereinafter described. Thepassage 5 opens at its ends onto the flat sides-ofthe nut, and

at'the small end of the passage communicates with a recess 6 in the nut. The locking" key. 7 is substantially of elongated conical configuration so as to snugly fit in the passage 5 of the nut. =-The key maybe made of steel or other hard metal, and, in

use, it is seen that when it is extended through the passage 5 a portion of the key will be extended through the bolt opening 4:

to become positively engaged with the shank 2, whereby the nut will be positively held against retrograde movement thereon. The

small end 8 of the locking key is adapted to be bent into the recess-6 of the nut, whereby the key will be securely held against acci dental displacement when in use. When it is desired to release the locking means from the bolt the portion 8 is bent to its original position and it maybe struck so thatthe key-can be forced from the passage 5 and entirely disengaged from the shank 2.

It is to be noted that the slot or recess is placed on the side of the nut 3 in such a manner that it will form an acute angle in itsunion with the passage 5 so that when the locking key 7 is bent at 8 to be seated in said recess, the bent end of the locking key Will also form an acute angle at the bend.

I claim In a nut look, a threaded bolt having an adjustable nut thereon provided with a tangent al tapering passage which. c'ommuni cates intermediate of its ends with the bolt opening in said nut and which terminates at one end in a recess that lies at an angle thereto, a shoulder being formed at the juncture of the recess with the passage, and atapering key-adapted to be driven into sa d passage in the nut and to have its small end bent over said shoulder so as to be in said recess, the walls of. the recess being so arranged as to prevent turnin of said key when the small end is bent mto said'recess.

In testimony whereof I afi'ix my signature in'presence of two witnesses.

I BOY G.' .SHOWALTER Witnesses: I

RoY S. GEEDEN,

PATRICK J, RYDER. 

